For example, plasma membrane proteins carry out functions as diverse as ferrying nutrients across the plasma membrane, receiving chemical signals from outside the cell, translating chemical signals into intracellular action, and sometimes anchoring the cell in a particular location (Figure 4).nzymes are another type of protein, and these molecules catalyze the biochemical reactions that occur in cells. Yet other proteins work as monitors, changing their shape and activity in response to metabolic signals or messages from outside the cell.
Brown served as a mentor on Season 8 of The Next Food Network Star alongside Bobby Flay and Giada De Laurentiis. During season 8, each mentor selected and mentored a team of five finalists. Team Alton's finalist Justin Warner was the season 8 winner; however, Brown will not be producing Warner's show.
The move to Facebook is a major return to the media business for Brown, who left CNN in 2010. She left NBC in 2008 and became an anchor at CNN in 2008. Since leaving CNN, she become an outspoken critic of teachersâ unions and a proponent of charter schools.